Repel Pro is an ultra concentrated marine grade ceramic coating delivering true 9h hardness and a multi-year guarantee on paint. Gel coats being much more porous will still experience 2-3x the durability of most polymer based sealants. Repel Pro is much less flexible and would be used in areas where only the absolute finest in surface protection is required and where longevity and performance is of utmost concern. Remember while using either, to top with Starke Replenish and also use often as a maintenance product to extend the life of the coating. 500mL and 1000ml sizes will be fulfilled in 100mL bottles. Ex. 500mL = (5) 100mL bottle Safety Data Sheet   100% PRICE MATCH GUARANTEE Same day shipping before 2pm eastern time All orders ship through UPS ground and USPS Priority Mail for 1 to 3 day ship times Discounted overnight rates through UPS Call 800-203-5315